Articles | Volume 20, issue 20
Atmos. Chem. Phys., 20, 12247–12263, 2020
https://doi.org/10.5194/acp-20-12247-2020
Atmos. Chem. Phys., 20, 12247–12263, 2020
https://doi.org/10.5194/acp-20-12247-2020

Research article 28 Oct 2020

Research article | 28 Oct 2020

Decennial time trends and diurnal patterns of particle number concentrations in a central European city between 2008 and 2018

Santtu Mikkonen et al.

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Cited articles

Aalto, P., Hämeri, K., Paatero, P., Kulmala, M., Bellander, T., Berglind, N., Bouso, L., Castaño-Vinyals, G., Sunyer, J., Cattani, G., Marconi, A., Cyrys, J., von Klot, S., Peters, A., Zetzsche, K., Lanki, T., Pekkanen, J., Nyberg, F., Sjövall, B., and Forastiere, F.: Aerosol particle number concentration measurements in five European cities using TSI-3022 condensation particle counter over a three-year period during health effects of air pollution on susceptible subpopulations, J. Air Waste Manage. Assoc., 55, 1064–1076, 2005. 
Avino, P., Casciardi, S., Fanizza, C., and Manigrasso, M.: Deep investigation of ultrafine particles in urban air, Aerosol Air Qual. Res., 11, 654–663, 2011. 
Birmili, W., Wiedensohler, A., Heintzenberg, J., and Lehmann, K.: Atmospheric particle number size distribution in central Europe: Statistical relations to air masses and meteorology, J. Geophys. Res.-Atmos., 106, 32005-18, 2001. 
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Short summary
We determined decennial statistical time trends and diurnal statistical patterns of atmospheric particle number concentrations in various relevant size fractions in the city centre of Budapest in an interval of 2008–2018. The mean overall decrease rate of particles in different size fractions was approximately −5 % scaled for the 10-year measurement interval. The decline can be interpreted as a consequence of the decreased anthropogenic emissions in the city.
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